Question

· A compound microscope has an objective
of focal length 4mm and an eye-piece of
focal length 25 mm. The objective
produces a real image at a distance of 180
mm. If the eye-piece is in normal
adjustment, then the magnification is
(1) 45 (2) 90 (3) 225 (4) 440​

Answer 1

Answer:

Focal length of objective of a compound microscope is 4mm and image is formed at a distance of 224 mm from it. If angular magnification is 550 then focal length of eye-piece for normal adjustment is : (1) 2.5 cm (2) 3 cm 155.

Explanation:

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Answer 2

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Correct option is (4) 440